Microsoft Exchange 2019 Mailbox Server Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-APP-000246
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Exchange mailbox stores must mount at startup.
Administrator responsibilities include the ability to react to unplanned maintenance tasks or emergency situations that may require Mailbox data manipulation. Occasionally, there may be a need to s...Rule Low Severity -
SRG-APP-000246
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SRG-APP-000246
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Exchange mail quota settings must not restrict sending mail.
Mail quota settings control the maximum sizes of a user's mailbox and the system's response if these limits are exceeded. Mailbox data that is not monitored against a quota increases the risk of ma...Rule Low Severity -
SRG-APP-000247
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SRG-APP-000247
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SRG-APP-000247
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The Exchange send connector connections count must be limited.
The Exchange Send connector setting controls the maximum number of simultaneous outbound connections allowed for a given SMTP connector and can be used to throttle the SMTP service if resource cons...Rule Low Severity -
SRG-APP-000247
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Exchange receive connectors must control the number of recipients per message.
Email system availability depends in part on best practice strategies for setting tuning configurations. This configuration controls the maximum number of recipients who will receive a copy of a ...Rule Low Severity -
SRG-APP-000247
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Exchange message size restrictions must be controlled on send connectors.
Email system availability depends in part on best practice strategies for setting tuning configurations. For message size restrictions, multiple places exist to set or override inbound or outbound ...Rule Low Severity -
SRG-APP-000247
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The Exchange global inbound message size must be controlled.
Email system availability depends in part on best practice strategies for setting tuning configurations. Message size limits should be set to 10 MB at most but often are smaller, depending on the o...Rule Low Severity -
SRG-APP-000247
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SRG-APP-000247
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SRG-APP-000247
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SRG-APP-000261
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Exchange servers must have an approved DOD email-aware virus protection software installed.
With the proliferation of trojans, viruses, and spam attaching themselves to email messages (or attachments), it is necessary to have capable email-aware antivirus (AV) products to scan messages an...Rule High Severity
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